ORTHOPTERA. 

 CHARACTERISTICS. 



1. Front wings straight-margined and leathery or 

 parchment-like and overlapping when not in use; 

 used as wing-covers and as balancers. 



2. Hind wings used for flight, variously colored or 

 colorless, and folded fanwise when not in use. 



3. Effective mandibles, either smooth or notched on 

 their inner edges. 



4. Cockroaches 



(a) Body thin and flattened. 



(b) Mandibles notched. 



Praying mantids 



(a) Front pair of legs much larger than the 

 other legs and fitted for seizing and grasp- 

 ing. 



Short -horned grasshoppers. 



(a) Hind pair of legs much stouter than the 

 other two pairs. 



(b) Antennae shorter than the body. 

 Long-horned grasshoppers. 



(a) Hind pair of legs stouter than the other two 

 pairs. 



(b) Antennae longer than the body. 



Crickets. 



(a) Hind pair of legs stouter than the two 

 other pairs. 



(b) Antennae long and slender, often much 

 longer than the body. 



Walking sticks. 



(a) The three pairs of legs similar but long and 

 very slender. 



(b) Body stick-like. 



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